docs: def is_packet_type(cls):
      """Check if class is one the packet types."""
      from .packet_types import EddystoneUIDFrame, EddystoneURLFrame, \
                                EddystoneEncryptedTLMFrame, EddystoneTLMFrame, \
                                EddystoneEIDFrame, IBeaconAdvertisement, \
                                EstimoteTelemetryFrameA, EstimoteTelemetryFrameB
      return (cls in [EddystoneURLFrame, EddystoneUIDFrame, EddystoneEncryptedTLMFrame, \
                      EddystoneTLMFrame, EddystoneEIDFrame, IBeaconAdvertisement, \
                      EstimoteTelemetryFrameA, EstimoteTelemetryFrameB])